{"product_id":"nikon-d2h-replacement-battery-111v-1800mah-li-ion","title":"NiKon EN-EL4 D2H Replacement Battery 11.1V 1800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNiKon D2H \/ D2X Series — 11.1V Li-ion Replacement Battery (EN-EL4)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 1800mAh Li-ion replacement for the NiKon EN-EL4, EN-EL4a, and EN-EL4e cells. It fits the D2H, D2Hs, D2X, and D2Xs bodies, along with additional NiKon pro-series DSLRs that share the same battery bay. Capacity matches the product spec at 19.98Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eD2-series platform compatibility:\u003c\/strong\u003e\n    The D2H, D2Hs, D2X, and D2Xs all draw from the same 11.1V three-cell Li-ion architecture and use identical battery bay connectors. NiKon standardised the EN-EL4 form factor across this generation, so one cell covers the full lineup without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the MH-21 charger and inside a D2X body. The camera-side BMS accepted the cell after one full charge cycle completed in-body, and the fuel gauge tracked discharge without fault flags through full depletion.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use charge cycle on D2-series bodies:\u003c\/strong\u003e\n    Run the first charge from zero to full inside the camera body or MH-21 charger before shooting. The D2-series BMS maps its battery-remaining display against a charge baseline it records on the first full cycle — skipping this step causes the indicator to read inaccurately from the start.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the D2H battery indicator drops suddenly under burst shooting load\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe D2H's motor drive and buffer write cycles spike current draw well above the camera's idle draw. Under sustained burst fire, the cell's internal resistance causes a momentary voltage sag that the BMS reads as a low-battery condition, triggering an early indicator drop. This is a measurement artefact, not actual capacity loss. Once burst activity stops, the resting voltage recovers and the display corrects itself.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically on the D2X display\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the camera's fuel gauge hasn't mapped the new cell's discharge curve. The D2X uses voltage-threshold lookups calibrated against the original cell's profile, and a fresh replacement cell discharges along a slightly different curve until it's been broken in. Run two full charge-discharge cycles through the MH-21 or in-body charging. After that, the indicator stabilises — if it doesn't, check the cell voltage at rest; it should sit at or above 11.1V when fully charged.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333876842586,"sku":"BWCS-ENEL4-1","price":41.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333876875354,"sku":"BWCS-ENEL4-2","price":48.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333876908122,"sku":"BWCS-ENEL4-3","price":53.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ENEL4_1.webp?v=1778213541","url":"https:\/\/batteryweb.com\/products\/nikon-d2h-replacement-battery-111v-1800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}